CN106907263A

CN106907263A - Engine cylinder-body with spill main beating cap

Info

Publication number: CN106907263A
Application number: CN201611186189.3A
Authority: CN
Inventors: M·伊佳科瓦
Original assignee: Ford Global Technologies LLC
Current assignee: Ford Global Technologies LLC
Priority date: 2015-12-22
Filing date: 2016-12-20
Publication date: 2017-06-30
Anticipated expiration: 2036-12-20
Also published as: CN106907263B; US10598225B2; DE102016123509A1; US20170175817A1

Abstract

The application provides the system for engine cylinder-body component, and the system includes cylinder block, bearing cap and crankshaft main bearing.In one example, engine cylinder body component can include cylinder block, be bolted to the bearing cap of the cylinder block, and the bearing cap includes：The first recess being included in first surface, the second recess being included in the second surface relative with the first surface and the directed thrust directed thrust surfaces being connected with crankshaft bearing, wherein due to the first recess and the second recess, the rigidity of directed thrust directed thrust surfaces can change along the axial profile of directed thrust directed thrust surfaces.When bolt of bearing cap is connected to cylinder block, directed thrust directed thrust surfaces can be bent by its stiffness variable, and the axial profile of crankshaft bearing therefore can be caused to bend to more convex form.

Description

Engine cylinder-body with spill main beating cap

Technical field

This specification relates in general to a kind of engine cylinder-body component for many combusted cylinder engines.

Background technology

In engine cylinder-body component, be converted into for advancing road for the translational motion of one or more pistons by bent axle Vehicle rotary motion.The bent axle keep and be supported on the cylinder block including combustion chamber and main beating cap directed thrust directed thrust surfaces it Between.Specifically, main beating cap can be bolted to the cylinder block, to keep and support bent axle.Bearing can be positioned at and push away Between power surface and bent axle, and the rotation of bent axle can be realized through lubrication.The trunnion of bent axle directly can connect with bearing Connect (interface).Engine performance and long term deterioration can be by bent axle and the circumferential profiles and/or axial profile shadow of base bearing Ring.In order to increase engine performance and reduce the long term deterioration of engine components, one or more in the bent axle and bearing Desired axial profile can be obtained with machined.

The content of the invention

However, inventors herein have recognized that the potential problems of such system.Specifically, the bent axle and/or axle The machining held can be time-consuming, expensive, and can be subjected to low-down error allowance.Additionally, the bent axle And/or the machining of bearing can be inconsistent.

Used as an example, above mentioned problem can be by including cylinder block and the bearing cap for being bolted to the cylinder block Engine cylinder-body component is solved, and the bearing cap includes：It is included in the first recess in first surface；It is included in and first surface The second recess in relative second surface；And the directed thrust directed thrust surfaces being connected with crankshaft bearing, wherein due to the first recess and second Recess, the rigidity of directed thrust directed thrust surfaces changes along the axial profile of directed thrust directed thrust surfaces.

The rigidity of directed thrust directed thrust surfaces can be at the edge on specific thrust surface closer to bigger at the central axis of bearing cap.Cause This, when bolt of bearing cap is connected into cylinder block, directed thrust directed thrust surfaces can bend to more convex axial profile.Additionally, working as axle When holding bonnet bolt and being connected to cylinder block, directed thrust directed thrust surfaces can apply compression stress on crankshaft bearing.However, due to directed thrust directed thrust surfaces Bending, compression stress can change along the axial profile of bearing, and wherein compression stress can get over closer to the central axis of crankshaft bearing Greatly.Therefore, bearing can bend the convexity increase of the axial profile for causing bearing.Therefore, the machining of bent axle and/or bearing Can reduce, and therefore the cost of engine cylinder-body component can be reduced.Additionally, the time of production engine cylinder-body component can To reduce.

In another example, crankshaft main bearing lid can include：It is included in the first recess on the preceding surface of bearing cap；Bag Include the second recess on the rear surface relative with preceding surface；Semicircle directed thrust directed thrust surfaces for keeping bent axle, wherein thrustmeter The flexible of face can change along the axial profile of directed thrust directed thrust surfaces；And be suitable to and pushing away that the trunnion of directed thrust directed thrust surfaces and bent axle is connected Power bearing.

In another example, engine cylinder-body component can include cylinder block；Bent axle；It is bolted to the bearing of cylinder block Lid, the first recess that bearing cap includes being extended internally from the preceding first surface of bearing cap, from relative with the first surface the The second recess and directed thrust directed thrust surfaces that two surfaces extend internally, the wherein mechanical strength of directed thrust directed thrust surfaces can be closer to directed thrust directed thrust surfaces Central axis it is bigger；And crankshaft bearing, it is positioned between bent axle and bearing cap, and wherein described bearing first surface Can be connected with directed thrust directed thrust surfaces, and the opposite second surface of wherein described bearing can be connected with the trunnion of bent axle.

By this way, producing the cost of engine cylinder body component and time can be reduced.Additionally, engine cylinder body The uniformity of shape of base bearing can increase.By including recess in the main beating cap of cylinder block component, work as bearing cap The compression stress being applied to when being bolted to cylinder block on bearing cap can change along the axial profile of the bearing.Therefore, When bolt of bearing cap is connected into cylinder block, it is possible to achieve the axial profile of the bearing, and therefore the bearing and/or The costly and time-consuming machining of bent axle can be reduced and/or eliminate.

It should be understood that the content of the invention above is provided to simplified form introduction further being retouched in detailed description The selection of the concept stated.It is not intended that the key or essential feature of theme required for protection are recognized, it is described claimed The scope of theme is uniquely limited by appended claim.Additionally, theme required for protection be not limited to solve above or The implementation method of any shortcoming mentioned in any part of the disclosure.

Brief description of the drawings

Fig. 1 shows the decomposition side view of the example cylinder body component for including base bearing and main beating cap.

Fig. 2A shows the view sub-anatomy of the cylinder block component shown in Fig. 1.

Fig. 2 B show the sectional view after the cylinder block assembling components shown in Fig. 1.

Fig. 3 shows the end-view of the main beating cap shown in Fig. 1 to Fig. 2 B.

Fig. 4 shows the sectional view of the main beating cap shown in Fig. 1 to Fig. 3.

Fig. 5 shows the side perspective view of the base bearing shown in Fig. 1 to Fig. 4.

Fig. 6 shows the sectional view of the base bearing and bearing cap shown in Fig. 1 to Fig. 5.

Fig. 7 shows the sectional view of the rear min bearing and bearing cap in the assembling of cylinder block.

Fig. 1 to Fig. 7 is about drawn to scale.It should be understood, however, that other relative sizes can be used.Additionally, attached Figure can describe either directly or indirectly touch each other and with contact with each other and/or part located adjacent one another, but can be basis Need to change such position relationship.Additionally, the accompanying drawing can show to be spaced away from each other and the middle part without part, but Can be to change such relation again as needed.

Specific embodiment

Description below is related to the system and method for assembled engines cylinder block component.In the example of Fig. 1 to Fig. 2 B Shown, cylinder block component can include thering is the multiple cylinder block of combustion chamber, the main beating cap for keeping bent axle and for reality Bearing of the existing bent axle relative to the rotation of cylinder block and main beating cap.In order to increase long-term engine performance and reduce cylinder block group The deterioration of part, the shape of the axial profile of bearing can be set to slightly convex.However, to realize the convex axial profile to axle Hold to be machined out with one or more in bent axle and can be expensive and/or take.

Therefore, as shown in Fig. 3 to Fig. 4 and Fig. 6 to Fig. 7, recess can be included on the opposite side of bearing cap so that The compression stress being applied to when bolt of bearing cap is connected into cylinder block on bearing is differently distributed along the axial profile of bearing.By Apply different power in the axial profile for crossing bearing, the bearing can deform naturally, connected bolt of main bearing cap with working as Convex axial profile is produced when being connected to cylinder block.Fig. 5 shows the base bearing before bolt of bearing cap is connected into cylinder block Example, and Fig. 7 shows the example of the base bearing after bolt of bearing cap is connected into cylinder block.Therefore, by bearing Cover including recess, when bolt of bearing cap is connected into cylinder block, it is possible to achieve the desired convex form of bearing, and therefore Cost and the time of assembling cylinder block component can be reduced.

Fig. 1 to Fig. 7 shows the example arrangement of the relative positioning of each part of cylinder block component and the cylinder block component. If through showing directly to contact with each other or directly coupling, at least this base part can correspondingly be claimed in one example Directly to contact or directly coupling.Similarly, at least in one example, the continuous each other or neighbouring part for showing can be with It is correspondingly continuous or neighbouring each other.As an example, it is coplanar with each other contact place component can be referred to as it is coplanar with each other contact or Physical contact with one another.As another example, be spaced from positioning and between only space can without the element of miscellaneous part So referred to at least one example.As another example, top of one another/below, at side relative to each other or arrive that Element shown in this left/right can be referred to so relative to each other.Additionally, as it is shown in the figures, most top element or element Point can be referred to as " top " of the part, and at least one example, the point of most bottom element or the element can To be referred to as " bottom " of the part.As used herein, top/bottom, up/down, above/below can be relative to accompanying drawing Vertical axis and for describing the element of accompanying drawing positioning relative to each other.Therefore, in one example, in other elements Element illustrated above is positioned vertically above the other elements.As another example, the unit shown in accompanying drawing The shape of part can be referred to as having those shapes (for example, such as circular, straight, flat, bending, fillet, chamfering , angled or analogous shape).Additionally, at least one example, the element for showing that intersects each other can be referred to as intersecting Element intersects each other.It is being shown in another element or in the unit shown in the outside of another element additionally, in one example Part can be referred to so.

Reference picture 1, Fig. 1 shows the decomposition diagram of example cylinder body component 2.As illustrated, cylinder block component 2 includes determining Cylinder block 4 of the position in the vertical top of structural framing 6.Pump 12 and food tray 14 can be positioned in the lower section vertically of structural framing 6.Axis System 101 is included to help describe the relative positioning of each part of cylinder block component 2.Axis system 101 includes longitudinal direction Axis, axis of pitch and vertical axis.The axis of pitch, horizontal axis and vertical axis may be orthogonal to each other, and therefore Three-dimensional coordinate system can be limited." length " of each part of component 2 can be used for describing each part of component 2 along longitudinal axis Physical extent.Additionally, " width " of each part of component 2 can be used for describing the thing of each part transversely axis of component 2 Reason scope.Similarly, " height " of each part of component 2 can be used for describing each part of component 2 along the physics of vertical axis Scope.Although depicting an example orientation in Fig. 1, it is understood that when being included in vehicle, cylinder block group Part 2 can be positioned in other orientations.

Cylinder block 4 also includes multiple Curved shaft support parts 100, and the bottom that it is positioned at cylinder block 4 is (for example, work as be coupled in Vertical bottom of the cylinder block 4 relative to ground during vehicle on road) place and structural support bent axle is configured (for example, referring to figure The bent axle 240 that 2A and Fig. 2 B are shown below).In some instances, cylinder block 4 can include two Curved shaft support parts.However, In other examples, cylinder block 4 can include two or more or following Curved shaft support part 100.One or more bearing caps 104 can To be secured to the Curved shaft support part 100.Specifically, a bearing cap can be fastened to Curved shaft support part 100 via bolt In each Curved shaft support part.Bearing cap 104 is configured reception crankshaft bearing and (is shown below for example, referring to Fig. 2A to Fig. 6 First base bearing 206 and the second base bearing 208).Therefore, Curved shaft support part 100 and bearing cap 104 can be couple to each other, from And form the substantially circular opening for being configured and receiving crankshaft bearing and bent axle.

Curved shaft support part 100 can each include the first directed thrust directed thrust surfaces 141 for being directly connected and being physically contacted bearing. Similarly, bearing cap 104 can include being directly connected and physically contacting with the second directed thrust directed thrust surfaces 143 of bearing.Therefore, Bearing can be positioned on the facing surface in inside of Curved shaft support part 100 and bearing cap 104.When bearing cap 104 is fastened to During cylinder block 4, bearing can be compressed between bearing cap 104 and cylinder block 4, and therefore, bearing cap 104 arrives cylinder block 4 Fastening can be referred to herein as " bearing extrude (bearing cursh) ".Specifically, when fastening bearing cap 104 and cylinder block 4 Bolt when being tightened, bearing cap 104 and cylinder block 4 apply vertical compression stress on bearing.This compression stress can cause axle The small deformation for holding and/or extruding.Therefore, bearing can be applied to by by one or more in bearing cap 104 and cylinder block 4 Compression stress on bearing is held in place by.More specifically, acting on the friction between directed thrust directed thrust surfaces 141 and 143 and bearing Power can limit movement of the bearing relative to bearing cap 104 and Curved shaft support part 100.Crankshaft bearing can be configured to realize song The rotation of axle.It will be appreciated that the bent axle can including balance weight, axle journal, crank-pin axle journals etc. various parts.It is described Crank-pin axle journals can be couple to piston with each via connecting rod.By this way, the burning in cylinder can be used for rotating institute State bent axle.

Bearing cap 104 can include two structure recesses or satchel 106 with each, and its reference picture 2A to Fig. 4 is below more It is shown specifically.Recess 106 can be configured to differently be distributed the pressure that bearing is applied to along the axial profile of the bearing Contracting power, such as reference picture 2A to Fig. 4 is discussed more fully below.Therefore, the amount of the inside compression stress being applied on bearing can be with Change along the longitudinal axis due to including satchel 106 in bearing cap 104.

As illustrated, the recess 106 can be positioned on the longitudinally opposed surface of the lid 104.Therefore, the lid Each in 104 can include two recesses 106 being arranged on the opposite side of the lid 104.Therefore, recess 106 can be by It is positioned on the preceding first surface 108 of bearing cap 104 and in relative rear second surface (not shown in figure 1).However, at other In example, recess 106 can be positioned in another correct position.Additionally, in some instances, recess 106 can have except Fig. 1 Shown in outside alternative geometric configurations and/or orientation.

In some instances, bearing cap 104 can be individually formed from cylinder block 4.Therefore, bearing cap 104 and cylinder block 4 Can individually cast and then be coupled against each other via bolt, its middle (center) bearing is extruded between.It should be understood, however, that In other examples, bearing cap 104 and cylinder block 4 can be formed by a continuous material pieces.In other words, Curved shaft support part 100 and bearing cap 104 can via it is single casting manufacture.

Cylinder block 4 also includes the outer antetheca 110 relative with outer rear wall 112.The antetheca 110 and rear wall 112 can include Curved shaft support part 100 and bearing cap 104 as shown in the example of Fig. 1.

With continued reference to Fig. 1, cylinder block 4 can include multiple cylinders 114.Specifically, in example shown in Fig. 1, vapour Cylinder body 4 can include 6 cylinders 114.However, in other examples, cylinder block 4 can include 6 above and below cylinders 114.Multiple cylinders 114 can conceptually be divided into the first cylinder group and the second cylinder group (116 and 118).Cylinder group 118 is with reference to figure 18 are showing in further detail herein.As illustrated, engine may be at V configurations, the wherein relative vapour in each respective cylinder group Cylinder is positioned with on-right angle relative to each other.By this way, cylinder is arranged with V-arrangement.However, the configuration of other cylinders is shown at other All it is possible in example.Paddy (valley) 120 can be positioned at the first cylinder group and the second cylinder group (116 Hes in cylinder block 4 118) between.When cylinder block component 2 is assembled, oil cooler 60 can be positioned in the paddy.Packing ring 119 can be positioned Between oil cooler 60 and cylinder block 4.

Cylinder block 4 also includes being positioned at the first cylinder cover composition surface 122 at the top 123 of cylinder block.Additionally exist In shown example, cylinder block includes the second cylinder cover composition surface 124.But in other examples, cylinder block can include Single cylinder cover composition surface.First cylinder cover composition surface and the second cylinder cover composition surface (122 and 124) can be configured Cylinder block 4 is couple to cylinder cover (for example, referring to the cylinder cover 202 that Fig. 2A to Fig. 2 B is shown below).Upon coupling, cylinder The cylinder 114 of lid and cylinder block 4 can form the combustion chamber that can wherein implement burning.Additionally, seal (for example, packing ring) Can be positioned between cylinder cover and the first cylinder cover composition surface and the second cylinder cover composition surface (122 and 124), with close Envelope cylinder 114.

Cylinder block 4 also includes first structure framework composition surface 126 and the second structural framing composition surface 128, the first knot Structure framework composition surface 126 and the second structural framing composition surface 128 are configured the knot that be attached to and be will be discussed in greater detail herein Two correspondences cylinder block side wall composition surface (130 and 132) included by structure framework 6.Two structural framing composition surfaces (126 With 128) be positioned on the opposite side of cylinder block 4.As illustrated, structural framing composition surface (126 and 128) is fastened including multiple Part opening 134.When fastener openings 134 are coupled on Fig. 2A to Fig. 2 B in the structural framing 6 for discussing in further detail herein, Fastener openings 134 can be configured the fasteners such as reception bolt.

Cylinder block 4 also includes first lateral wall 133 relative with the second lateral wall 135.First lateral wall 133 is from the first vapour Cylinder cap composition surface 122 extends to the first structure framework engagement being positioned between the center line 139 of multiple Curved shaft support parts 100 Surface 126.Equally, the second cylinder block lateral wall 135 is extended to from the second cylinder cover composition surface 124 and is positioned at multiple bent axle branch The second structural framing composition surface 128 between the center line 139 of support member 100.As illustrated, the structural framing composition surface (126 and 128) are substantially flat.However, in other examples, the structural framing composition surface can have another several What shape configuration.For example, the height of the structural framing composition surface can change.

Additionally, structural framing 6 includes basal surface 109 and two lateral walls：First structure framework lateral wall 136 and the second knot Structure framework lateral wall 138.First structure framework lateral wall 136 extends and including the engagement of the first cylinder block side wall from basal surface 109 Surface 130.Equally, the second structural framing lateral wall 138 extends and including the second cylinder block side wall composition surface from basal surface 109 132.Additionally, when cylinder block component 2 is assembled, first structure framework lateral wall and the second structural framing lateral wall (136 and 138) Extend on the top of Curved shaft support part 100.Additionally, basal surface 109 is below Curved shaft support part 100.However, at other In example, other configurations are possible.For example, first structure framework lateral wall and the second structural framing lateral wall (136 and 138) Can not extend on the top of Curved shaft support part.As illustrated, the structural framing has U-shape.However, showing at other In example, other shapes are possible.Cylinder block side wall composition surface (130 and 132) is configured the structure being attached on cylinder block 4 Framework composition surface (126 and 128) is simultaneously positioned on the opposite side of structural framing 6.In the example shown, cylinder block side wall connects Close the top surface that surface (130 and 132) form structural framing.However, in other examples, other configurations are possible.Cylinder Body sidewall composition surface (130 and 132) includes multiple fastener openings 140 along its length.As illustrated, cylinder block side wall connects It is substantially flat with consistent horizontal and vertical plane to close surface (130 and 132).However, in other examples, it is alternative Geometric configurations and orientation be possible.For example, the vertical height of the side wall composition surface can change.

Structural framing can also include the front casing extended along at least a portion of structural framing lateral wall (136 and 138) (cover) composition surface (182 and 184).First seal 170 can be positioned at the He of the first cylinder block side wall composition surface 130 Between first structure framework composition surface 126.Equally, second seal 172 can be positioned at the second cylinder block side wall table of joint Between the structural framing composition surface 128 of face 132 and second.First seal and second seal (170 and 172) can be basic It is upper airtight and liquid-tight.Example seal includes but is not limited to packing ring, adhesive etc..

When cylinder block component 2 is assembled, structural framing 6 includes the interior part 142 of neighbouring Curved shaft support part 100.Interior part 142 fastener openings 144 that the suitable fasteners such as bolt are received including being configured.Such as discussing in further detail herein, fastening Part can extend through fastener openings 144 and arrive in bearing cap 104.

In some instances, cylinder block 4 and structural framing 6 can be constructed by different materials.Specifically in one example, Cylinder block 4 can be constructed by the material with the intensity bigger than structural framing 6 and volume ratio.However, in other examples, vapour Cylinder body and structural framing can be constructed by essentially identical material.The exemplary materials that can be used for constructing cylinder block include that ash is cast Iron, vermicular cast iron, spheroidal graphite cast-iron, aluminium, magnesium and/or plastics.Exemplary materials for structural texture framework include gray cast iron, compacted Black cast iron, spheroidal graphite cast-iron, aluminium, magnesium and/or plastics.In a specific example, cylinder block can be constructed by vermicular cast iron, and Structural framing can be constructed by aluminium.

Cylinder block component 2 can also include being positioned at the food tray 14 of structural framing 6 and the vertical lower section of cylinder block 4.Work as assembling When, oil pump 12 can be couple to the food tray composition surface on the bottom side of structural framing 6.Additionally, oil pump 12 includes working as cylinder Oil pick-up (oil pick-up) 150 and be configured conveying oil to structural framing that body component 2 is positioned in food tray 14 when assembling The outlet port 152 of the oily passage in 6.By this way, oil pump 12 can receive oil from food tray 14.Cylinder block component 2 may be used also With including oil strainer 10.The oil strainer can be couple to plate body cooler 160.When engine oil runs through cycle of engine When, the cooling engine oil of plate body cooler 160.

Cylinder block component 2 can also include food tray 14.Food tray 14 can include the fastener for having for receiving fastener 3rd structural framing composition surface 174 of opening 176.Seal 178 can be positioned at the He of the 3rd structural framing composition surface 174 It is included between the food tray composition surface in structural framing 6.

Structural framing 6 can also be including the Sensor mounting boss for receiving the sensors such as oil pressure force snesor 180.As illustrated, Sensor mounting boss 180 is positioned on first structure framework lateral wall 136.However, the sensor peace Dress boss can be positioned in another correct position, such as be positioned in other examples on the second structural framing lateral wall 138.

Cutting planes 190 limit the section of the component 2 that reference picture 2A to Fig. 4 is shown below.Cutting planes 190 can With parallel to the plane limited by the vertical axis and axis of pitch of the axis system.

Turning now to Fig. 2A and Fig. 2 B, Fig. 2A and Fig. 2 B show to be intercepted along cutting planes 190 (reference picture 1 is illustrated above) The sectional view of cylinder block component 2 that is illustrated above of reference picture 1.Therefore, in Fig. 2A and Fig. 2 B with Fig. 1 similarly compile Number and each part of component 2 for having introduced in Fig. 1 and having described can not again be situated between in the description of Fig. 2A and Fig. 2 B herein Continue.Fig. 2A shows the decomposition view of cylinder block 4, bearing cap 104 and structural framing 6.Fig. 2 B show what is assembled and be coupled together The assembled view of cylinder block 4, bearing cap 104 and structural framing.

Fig. 2A is focused first on, it shows to include structural framing 6, cylinder block 4 and component 2 of bearing cap 104 The view sub-anatomy 200 of a part.As shown in the example of Fig. 2A, cylinder cover 202 can be physically coupled to cylinder block 4.Tool Body ground, first group of bolt 204 can be with tightening cylinder lid 202 to cylinder block 4, so as to fluidly seal cylinder 114.Specifically, vapour Cylinder cap 202 can be physically coupled to cylinder block at the first cylinder cover composition surface 122 and the second cylinder cover composition surface 124 4.Therefore, during bolt 204 can extend through cylinder cover 202 and extend to cylinder block 4, so that fixed cylinder lid 202 arrives cylinder Body 4.

Cylinder 114 can include piston (not shown in Fig. 2A and Fig. 2 B) with each, the piston can in the cylinder 144 Slided between top dead centre (TDC) position and lower dead center (BDC) position.The translational motion of the piston can be converted into bent axle 240 Rotary motion.Specifically, the piston can be couple to the song of bent axle 240 via connecting rod (not shown in Fig. 2A and Fig. 2 B) Handle pin journal 242.When bent axle 240 rotates, the balance weight 244 of crank-pin axle journals 242 and bent axle 240 can be around crank spindle Neck 246 rotates.

As reference picture 1 is described above, bent axle 240 can be supported and is maintained between cylinder block 4 and bearing cap 104. One or more bearings can be respectively included the bent axle of the first directed thrust directed thrust surfaces 141 and the second directed thrust directed thrust surfaces 143 and bent axle 240 Between trunnion 246.Specifically, upper first base bearing 206 can be positioned at the Curved shaft support part 100 of bent axle 240 and cylinder block 4 The first directed thrust directed thrust surfaces 141 between.Additionally, lower second base bearing 208 can be positioned at the second of bent axle 240 and bearing cap 104 Between directed thrust directed thrust surfaces 143.It should be understood, however, that in some instances, bearing can include single part, and can not wrap Include two different upper bearing (metal)s and lower bearing.Therefore, in some instances, lower second base bearing 208 and upper first base bearing 206 Can be casting together, to form single continuous bearing.Although showing the He of the first base bearing 206 in Fig. 2A and Fig. 2 B Second base bearing 208 under one, it should be understood that one of the first base bearing 206 and lower second base bearing 208 on each Can be included between each bearing cap 104 and each Curved shaft support part 100.

Shape and size of the bearing 206 with 208 can be set to about mutually the same or similar.However, in other examples In, the shape and/or size of bearing 206 and 208 can differently set.As shown in the example of Fig. 2A and Fig. 2 B, bearing 206 Shape with 208 can be set as the semicircular shell with interior semicircular surface and outer semicircular surface.Therefore, bearing 206 The arc that can limit circular discs with 208, the arc is limited by the central angle of about 180 degree.Therefore first base bearing 206 can be Including outer first surface 207 and interior second surface 209.Interior second surface 209 can be concentrically positioned in outer first surface 207 It is interior.Therefore, the arc length of outer first surface 207 can be more than the arc length of interior second surface 209.However, limiting described The central angle on surface 207 and 209 can be same or similar.Similarly, the second base bearing 208 can include outer first table Face 211 and interior second surface 213.Interior second surface 213 can be concentrically positioned in outer first surface 211.Therefore, outward first The arc length on surface 211 can be more than the arc length of interior second surface 213.However, limiting the surface 211 and 213 Central angle can be same or similar.

The outer first surface 207 and 211 of the first base bearing 206 and the second base bearing 208 can respectively be physically contacted with and pushed away Power surface 141 and 143 and/or it is connected with directed thrust directed thrust surfaces 141 and 143.Specifically, the outer first surface of first base bearing 207 directed thrust directed thrust surfaces 141 that can physically contact with Curved shaft support part 100.Additionally, the outer first surface of second base bearing 211 directed thrust directed thrust surfaces 143 that can physically contact with bearing cap 104.Additionally, interior second surface 209 and 213 can be physically contacted with The trunnion 246 of bent axle 240 and/or it is connected with the trunnion 246 of bent axle 240.However, in some instances, interior second surface 209 and 213 can be by interval or the physical separation of trunnion 246 of space and bent axle 240.In further example, interior second Only one can be physically contacted with the trunnion 246 of bent axle 240 in surface 209 or interior second surface 213.

As reference picture 1 is described above, directed thrust directed thrust surfaces 141 and 143 can be approximately semicircular.Therefore, directed thrust directed thrust surfaces 141 The arc that can limit semi-circular disks with 143, the arc has the central angle of about 180 degree.The arc of directed thrust directed thrust surfaces 141 and 143 Shape length can be with approximately the same or similar.In some instances, the arc length of directed thrust directed thrust surfaces 141 and 143 can be about leading The half of total arc length of bearing hole.However, in some instances, total arc length of directed thrust directed thrust surfaces 141 and 143 can be Depending in the length range between 120.0mm to 400.0mm of main bearing hole diameter.

The size of bearing 206 and 208 can be set to less times greater than directed thrust directed thrust surfaces 141 and 143.For example, bearing 206 is outer The arc length of first surface 207 and 211 can distinguish the arc length about 0.1mm on specific thrust surface 141 and 143.

By this way, when bearing cap 104 is fastened to cylinder block 4, compression stress can be applied on excessive bearing.Tool Body ground, directed thrust directed thrust surfaces 141 and cylinder block 4 can be by the negative directions of the sensing vertical axis (for example, in Fig. 2A to Fig. 2 B It is downward from top to bottom) downward force is applied on upper first base bearing 206.Similarly, directed thrust directed thrust surfaces 143 and bearing cap 104 can apply to point to (for example, upward from bottom to top in Fig. 2A to Fig. 2 B) of the positive direction of the vertical axis to Upper power.Therefore, cylinder block 4 and bearing cap 104 can apply the power of anti-parallel direction, and this can extrude bearing 206 and 208.Cause This, due to the compression stress, the bearing 206 and 208 can be in negative horizontal direction and positive horizontal direction (for example, in Fig. 2A extremely It is bent outwardly in Fig. 2 B to the left and to the right).

The end 210 of bearing 206 and 208 can be with physical contact with one another.Therefore, when the thing of end 210 of bearing 206 and 208 During reason contact, bearing 206 and 208 may be combined to form closed circle housing.When applying the compression stress during bearing is extruded, End 210 can outwards shift on negative horizontal direction and positive horizontal direction.

Satchel 106 can be formed on the opposite side of bearing cap 104.Specifically, the satchel 106 can be included On preceding first surface 108, and on the relatively rear second surface 218 of bearing cap 104.The satchel 106 can be from bearing The surface 108 and 218 of lid 104 is recessed.Therefore, bearing cap 104 can not include bag by ratio at satchel 106 in bearing cap 104 It is thinner at the region of shape thing 106.The more detailed description reference picture 3 of the size and dimension of the satchel is presented below to Fig. 4.

Bearing cap 104 can be fastened to cylinder block 4 by Main bearing bolt 212.Therefore, Main bearing bolt 212 can be from axle The bottom 219 for holding lid 104 extends, and through bearing cap 104, and extends to cylinder block 4.When bearing cap 104 is fastened to cylinder block 4 When, the basal surface 215 of cylinder block 4 can physically contact with the top surface 217 of bearing cap 104.

Additionally, cylinder block 4 and bearing cap 104 can be fastened to via second group of bolt 220 and the 3rd group of bolt 222 respectively Structural framing 6.Specifically, as described in Fig. 2 B, cylinder block side wall composition surface 130 and 132 is configured and the knot on cylinder block 4 Structure framework composition surface 126 and 128 is connected and physically contacts with structural framing composition surface 126 and 128.Second group of bolt 220 Structural framing 6 can be extended through and extended in cylinder block 4, so as to pass through surface 126 and 130 or 128 and 132.3rd Group bolt 222 can extend through structural framing 6 and extend in bearing cap 104.Specifically, structural framing 6 can include it On can dispose the bearing cover supporting member 224 of bearing cap 104.Therefore, support member 224 can be in bearing cap 104 and structural framing 6 Between interface is provided, the interface can be used for providing enough surface regions for bearing cap 104, with contact structures framework 6.3rd During group bolt 222 can extend through support member 224 and extend to bearing cap 104.

Turning now to Fig. 2 B, Fig. 2 B show cylinder block 4, structural framing 6, bearing cap 104, bent axle 240 and a cylinder cover 202 assembled view 250.Therefore, as shown in Figure 2 B, bearing cap 104 is fastened to cylinder block 4 via Main bearing bolt 212, from And extrude the bearing 206 and 208 between bearing cap and cylinder block.By tightening Main bearing bolt 212, vertical compression stress can be by It is applied on bearing 206 and 208.Specifically, the compression stress can be acted on along the vertical direction parallel to the vertical axis. Cylinder block 4 can apply downward force on bearing 206 and 208, such as be shown by the first power arrow 252.Additionally, bearing cap 104 can To apply upward power on bearing 206 and 208, such as shown by the second power arrow 254.Therefore, power arrow 252 and 254 can be with table It is shown as with the compression stress on bearing 206 and 208.In some instances, the bolt 212 can be tightened to bolt 212 not What can further be tightened tightens position completely, and last compression stress is applied on bearing 206 and 208.Bolt can be by The resulting compressive force tightened may be about 20kN.However, in other examples, the resulting compressive force can be in 18kN and 60kN Between.

When Main bearing bolt 212 is tightened, the downward force being applied on upper first base bearing 206 by cylinder block can increase Plus.Similarly, the upward power being applied to down on the second base bearing 208 by bearing cap 104 can increase.By cylinder block 4 and bearing The compression stress that lid 104 is applied on bearing 206 and 208 can be such that bearing 206 and 208 is bent outwardly at its end 210, wherein Bearing 206 and 208 contacts with each other.Specifically, the end 210 can be bent outwardly in transverse direction.Therefore, by bearing cap Before 104 are bolted to cylinder block 4, bearing 206 and 208 can be semicircular with each.However, being twisted by bolt 212 Tight and after applying compression stress, bearing 206 and 208 can be bent so that with elliptical shape, wherein major axis can be along the horizontal stroke Extend to axis, and short axle can extend along the vertical axis.

Cylinder block 4 and bearing cap 104 are interconnected and physically contacted with mutually along surface 215 and 217.First base bearing 206 outer first surface 207 can physically contact with directed thrust directed thrust surfaces 141.Similarly, the outer first surface of the second base bearing 208 211 can physically contact with directed thrust directed thrust surfaces 143.

Bearing cap 104 can be relied on support member 224.Structural framing 6 can be couple to bearing by the 3rd group of bolt 222 Lid 104.Additionally, structural framing 6 can be couple to cylinder block 4 by second group of bolt 220.Therefore, structural framing 6 and cylinder block 4 Can interconnect and be contacted with each other along surface 128 and 132 and along surface 126 and 130.

Referring now to Fig. 3, Fig. 3 shows the front view 300 of one of the bearing cap 104.Therefore, referring to figs. 1 to figure The part of the bearing cap 104 that 2B was introduced above can not again be introduced or described in the description of Fig. 3 herein.Axis system 101 include the vertical axis from the top of the bottom sensing of Fig. 3 and the axis of pitch from the right of the sensing of the left side.Although Fig. 3 only shows Preceding first surface 108, it should be understood that second surface 218 is same or like with preceding first surface 108 afterwards.With another kind Mode, rear second surface 218 can be identical with preceding first surface 108.First surface 108 and second surface 218 each wrap respectively Include one of recess 106.

As shown in Figure 3, recess 106 can include the concave surface 304 that can be inserted from the outer surface of bearing cap 104. In some examples, the depth 310 of recess 106 may be about 3.0mm to 5.0mm and/or can be the total length of bearing cap 104 1/3rd.In further example, the depth 310 of recess 106 can be appointing between 2.0mm and 6.0mm What depth.

The leading edge of recess 106 or top 302 can be spaced a constant distance 318 with the directed thrust directed thrust surfaces 143 of bearing cap 104. In some instances, the distance between leading edge 302 and directed thrust directed thrust surfaces 143 of recess 106 318 may be about 5.0mm.However, In other examples, distance 318 can be any distance between 3.0mm and 10.0mm.Therefore, the shape of leading edge 302 can be with Substantially conforming to the shape of directed thrust directed thrust surfaces 143.Therefore, leading edge 302 can form round arc, and the arc is limited by central angle θ It is fixed.In some instances, central angle θ may be about 100 degree.However, in other examples, central angle can be at 60 degree and Central angle between 170 degree.Bent tip 308 can be formed at the top of the end of leading edge 302 and recess 106.Therefore, it is curved Bent tip 308 can limit the length of leading edge 302.

The width 316 of recess 106 may be about 1/2nd of the overall width 324 of bearing cap 104.However, showing at other In example, width 316 can be between a quarter and 3/4ths of the overall width 324 of bearing cap 104.Due to leading edge 302 Curvature, the height of recess 106 can change along the width of recess 106.

In some instances, the minimum constructive height 312 of recess 106 may be about the total height 322 of bearing cap 104 three/ One.However, in other examples, minimum constructive height 312 can be 1/8th and two points of the total height 322 in bearing cap 104 One of between.

Turning now to Fig. 4, Fig. 4 shows the sectional view 400 of one of one of bearing cap 104 and lower second base bearing 208.Specifically Ground, Fig. 4 shows the section of one of the bearing cap 104 intercepted along the cutting planes 320 that reference picture 3 is illustrated above.Therefore, The part of the base bearing 208 of bearing cap 104 and second being introduced above referring to figs. 1 to Fig. 3 can not herein in the description of Fig. 4 Again introduce or describe.Axis system 101 is included in fig. 4, and wherein vertical axis point to top from bottom in fig. 4, and And longitudinal axis points to the left side from the right.Central axis X-the X ' of bearing cap 104 vertically extends in fig. 4 through showing, parallel In the vertical axis of axis system 101.Equally can be split into two halves for bearing cap 104 by central axis X-X '.With another The mode of kind, bearing cap 104 can be on central axis X-X ' near symmetricals.Central axis X-X ' can limit plane, described flat The plane that face limits parallel to the vertical axis and axis of pitch by being illustrated above referring to figs. 1 to Fig. 3.Therefore, center Axis X-X ' can limit the plane parallel to the cutting planes 190 described above of reference picture 1.Therefore, central axis X-X ' Through being oriented parallel to the vertical axis, and can extend along the axis of pitch.

As shown in Figure 4, each in bearing cap 104 can include two recesses：One recess is in preceding first surface 108 Place, and one at rear second surface 218.Specifically, first surface 108 can include first recess 106, and second Surface 218 can include the second recess 407.Second recess 407 can be same or like with the first recess 106.Therefore, second is recessed Place 407 can be identical with the first recess 106 on first surface 108 relative to the size of second surface 218 and position.Additionally, Because bearing cap 104 can be symmetrical on central axis X-X ', it should be understood that the size and orientation of second surface 218 can be with It is set to same or like with first surface 108.Therefore, the depth of recess 106 and 407 can be identical and can be deep Degree 310.

Therefore, in some instances, the depth 310 of recess 106 and 407 may be about 8.0mm and/or can be bearing cap / 3rd of 104 larger first length 402.The length 402 of bearing cap 104 can be in the table of first surface 108 and second The distance between face 218, as shown in the example of fig. 4.In some instances, length 402 may be about 22.0mm.However, In other examples, length 402 can be the length between 15.0mm and 50.0mm.

In further example, the depth 310 of recess 106 can be between 2.0mm and 10.0mm in the range of appoint What depth and/or can be between the 10% and 40% of the first length 402 of bearing cap 104.

Therefore, smaller second length 404 of bearing cap 104 can be formed at recess 106 and 407.In some instances, Smaller second length 404 may be about 6.0mm.However, in other examples, length 404 can be between 4.0mm and 20mm Length.Therefore, the length of the bearing cap 104 at recess 106 and 407 can be than in first surface 108 and second surface 218 Between length it is small.In another way, the length of bearing cap 104 can be inconsistent along the vertical height of bearing cap 104.Specifically Ground, the second length 404 at recess 106 and 407 can be less than bearing cap 104 not to be included at the part of recess 106 and 407 First length 402.

Therefore, the length of bearing cap 104 can be between the leading edge 302 and directed thrust directed thrust surfaces 143 of recess 106 and 407 First length 402.In another way, bearing cap 104 can be constant along the length of distance 318, and may be about One length 402.Additionally, the length of bearing cap 104 can be the bottom of feather edge 410 in recess 106 and 407 and bearing cap 104 The first length 402 between portion 219.In another way, feather edge 410 and bearing of the bearing cap 104 in recess 106 and 407 Length between the bottom 219 of lid 104 can be constant, and can be identical along distance 318.By this way, the first table Face 108 can be parallel and substantially flat surface with second surface 218.Similarly, each in recess 106 and 407 Concave surface 304 can be substantially planar and parallel to each other.Additionally, each concave surface 304 can be parallel to first surface 108 and second surface 218.

Feather edge 410 can be orientated as and the bottom 219 of bearing cap 104 away from the second distance 412.In some instances, Second distance 412 may be about 10.0mm.However, in other examples, second distance 412 can be in 5.0mm and 20.0mm Between any distance.

As shown in Figure 4, tightened in Main bearing bolt (for example, the bolt 212 shown in Fig. 2A to Fig. 3) and apply bearing Before extruding compression stress, directed thrust directed thrust surfaces 143 can be along the longitudinal axis is substantially flat and plane.Similarly, exist Before the tightening of Main bearing bolt, the surface 211 and 213 of bearing 208 can be along the longitudinal axis it is substantially flat and Plane.

Turning now to Fig. 5, Fig. 5 shows the side perspective view 500 of bearing 206 and 208.Therefore, exist referring to figs. 1 to Fig. 4 The part of bearing 206 and 208 presented hereinbefore can not again be introduced or described in the description of Fig. 5 herein.

Bearing 206 and 208 can have the thickness 502 and length 504 of relative constancy.Additionally, the length of bearing 206 and 208 Degree can be identical, and the thickness of bearing 206 and 208 can be identical.Specifically, thickness 502 may be about 2.5mm.However, in other examples, thickness 502 can be between 1.5mm and 4.0mm in the range of any thickness.Length 504 can be same or like with the length (reference picture 4 is illustrated above) of bearing cap 104.However, in other examples, length 504 length 402 that can be more than or less than bearing cap 104 (reference picture 4 is illustrated above).Cutting planes 320 are limited in figure 6 The section of the bearing 208 being shown below.Therefore, the He of bearing 208 when Fig. 6 can show that bearing 208 and bearing cap 104 are assembled The sectional view of bearing cap 104.

Turning now to Fig. 6 and Fig. 7, Fig. 6 and Fig. 7 show by bearing cap 104 be bolted to cylinder block (for example, referring to The cylinder block 4 that Fig. 1 to Fig. 3 is illustrated above) before and after bearing 208 and bearing cap 104 sectional view.Specifically, Fig. 6 320 sections of cutting planes being illustrated above in the forward position reference picture 3 and Fig. 5 that bearing cap 104 is bolted to cylinder block are shown The bearing 208 for taking and a sectional view for bearing cap 104 600.Fig. 7 shows the bearing 208 intercepted along cutting planes 320 and one The sectional view similar with the sectional view shown in Fig. 6 of bearing cap 104.However, Fig. 7 shows to be bolted in bearing cap 104 It is connected to cylinder block 4 and has applied the bearing cap 104 after compression stress and bearing 208.By the bolt connection of bearing cap 104 During cylinder block 4, the directed thrust directed thrust surfaces 143 of bearing cap 104 can bend, so that the convexity of the axial profile of bearing increases.

The bearing 208 and the part of bearing cap 104 being introduced above referring to figs. 1 to Fig. 5 can not herein in Fig. 6 and Introduced again in the description of Fig. 7 or described.Axis system 101 is included in figure 6 and figure 7, wherein the vertical axis are in Fig. 6 Top is pointed to from bottom with Fig. 7, and the longitudinal axis points to the left side from the right.

Specifically, Fig. 6 shows the compression stress being applied to by bearing cap 104 during bearing is extruded on bearing 208.Therefore, When Main bearing bolt (for example, the bolt 212 shown in Fig. 2A to Fig. 3) is tightened, the directed thrust directed thrust surfaces of lower second base bearing 208 143 can apply, along the upward compression stress of positive vertical direction, such as to be shown by power arrow 254 on bearing 208.Therefore, along axle Compression stress at each point for the girth for holding 208 can vertically be directed upwards towards during bearing is extruded.

Further, since the directed thrust directed thrust surfaces 143 and outer first surface 211 of bearing 208 can be substantially planar, in bearing The power being applied to during extruding on bearing 208 can be consistent along the axial profile of bearing 208.Therefore, the compression stress can be closed It is symmetrical in central axis X-X '.It is, the size of the compression stress can be for the axial profile along bearing 208 with Heart axis X-X ' equidistances are positioned and identical on point relative to each other on central axis X-X '.However, in other examples, Directed thrust directed thrust surfaces 143 and/or outer first surface 211 cannot be planes, and therefore, be applied to the compression stress on bearing 208 Can change along the axial profile of bearing 208.

When the spiral shell that bearing cap 104 is fastened to cylinder block (for example, referring to the cylinder block 4 that Fig. 1 to Fig. 2 B is illustrated above) When compression stress increases when bolt (for example, referring to the bolt 212 that Fig. 2A to Fig. 3 is illustrated above) is tightened, bearing 208 can be in bearing Apply relative and approximately equivalent relative to force on lid 104.Between the surface 211 of directed thrust directed thrust surfaces 143 and bearing 208 Contact surface and this relative to force relative with compression stress may be generally referred to as normal force (normal force).It is, according to Newton's third law, bearing 208 can apply normal force or contact force on bearing cap 104, and it is applied to by bearing cap 104 Compression stress on bearing 208 is relative.Additionally, such as by the power arrow F in Fig. 6₂It is shown, it is applied on bearing cap 104 by bearing 208 Normal force can increase proportional to the increase of compression stress.More simply, as the normal force as shown in power arrow F2 can be with The size of compression stress is identical.Because the length of bearing 208 can be about the same with the length of directed thrust directed thrust surfaces 143, normal force can be with It is distributed along the surface region and axial profile of directed thrust directed thrust surfaces 143.When compression stress and when therefore normal force is increased above threshold value, Such as when Main bearing bolt is tightened, directed thrust directed thrust surfaces 143 can start to bend to more convex axial profile, wherein directed thrust directed thrust surfaces 143 In can be bent towards recess 106 and 407 closer to the end on surface 108 and 218, and wherein closer to central axis X-X ' Surface 143 can along away from recess 106 and 407 rightabout bend.

Due to recess 106 and 407, the rigidity of directed thrust directed thrust surfaces 143 can change along the axial profile of bearing cap 104.Also It is that the mechanical support on the vertical direction lifting force surface 143 can be in central axis X-X ' places ratio on closer surface 108 Edge with 218 surface 143 is bigger.In another way, compared with away from central axis X-X ', bearing cap 104 can be with Vertical force higher can be being born without bending closer to central axis X-X ' places.Due to pushing away in the top of recess 106 and 407 Mechanical support of the power surface 143 vertically and towards first surface 108 and second surface 218 is reduced, therefore works as base bearing When bolt is tightened, directed thrust directed thrust surfaces 143 can bend during bearing is extruded.

Specifically, the end of directed thrust directed thrust surfaces 143 may be located remotely from bent axle and (is illustrated above for example, referring to Fig. 2A to Fig. 2 B Bent axle 240) be bent outwardly, and directed thrust directed thrust surfaces 143 closer to central axis X-X ' more core can towards bent axle to Interior bending.When compression stress and when therefore normal force is increased above threshold value, directed thrust directed thrust surfaces 143 can bend along the longitudinal axis To more convex axial profile.In some instances, the threshold value can be less than and fully tighten the after-applied of Main bearing bolt Resulting compressive force.Therefore, bending is started at the compression stress that directed thrust directed thrust surfaces 143 can be between 1.0kN and 5.0kN.Therefore, institute is worked as State bolt to tighten and when bearing cap 104 is fastened to cylinder block, and the resulting compressive force is tightened in the bolt and be applied to Before its on bearing 206 and 208 fully tightens position, directed thrust directed thrust surfaces 143 and/or between leading edge 302 and directed thrust directed thrust surfaces 143 Including a part of of bearing cap 104 can bend to more convex form.

When directed thrust directed thrust surfaces 143 bend, compression stress can cross the axial profile uneven distribution of bearing 208.It is, Due to the curvature of directed thrust directed thrust surfaces 143, compression stress can be in closer central axis X-X ' Shi Geng great and closer surface 108 He It is smaller when 218.

By between the depth for increasing recess 106 and 407 and/or the leading edge 302 and directed thrust directed thrust surfaces 143 that reduce the recess Distance 318, it is described bending and therefore bearing 208 axial profile convexity can bearing extrude during increase.With another The method of kind, the flexibility of the part of the bearing cap 104 included between the recess and directed thrust directed thrust surfaces 143 can increase.Cause This, directed thrust directed thrust surfaces 143 can bend with compared with low compression force.

Focusing on Fig. 7, Fig. 7 is shown in bearing extruding and Main bearing bolt (for example, the master shown in Fig. 2A to Fig. 3 Bearing bolt 212) tighten after along cutting planes 302 intercept bearing 208 and a sectional view for bearing cap 104 700.Cause This, the part of the bearing 208 being introduced above referring to figs. 1 to Fig. 6 can not again be introduced or retouched in the description of Fig. 7 herein State.Axis system 101 is included in the figure 7, wherein vertical axis in the figure 7 from bottom point to top, and longitudinal axis from Point to the left side in the right.

As reference picture 6 is described above, due to bearing cap 104 in the recess, the rigidity of directed thrust directed thrust surfaces 143 can be with Reduce.In another way, the flexibility of directed thrust directed thrust surfaces 143 can increase.Vapour is connected and is tightened to as bearing cap 104 is bolted Cylinder body, the power being applied to by bearing 208 in directed thrust directed thrust surfaces 143 increases.However, due to recess 106 and 407, directed thrust directed thrust surfaces 143 and bearing cap 104 can compared with low compression force bend.It is, when the compression stress is increased above threshold value, thrustmeter Face 143 can start bending, and wherein threshold value can be represented less than when the bolt is tightened to what is applied when it fully tightens position The compression stress of resulting compressive force.More specifically, due to recess 106 and 407, in the leading edge 302 and thrustmeter of recess 106 and 407 The part of the bearing cap 104 included between face 143 can have smaller rigid and more flexibilities.On the vertical direction The structural support of directed thrust directed thrust surfaces 143 can closer to surface 108 and 218 when it is smaller and closer to central axis X-X ' when It is bigger.In another way, due to including recess 106 and 407, surface 108 He of the directed thrust directed thrust surfaces 143 closer to bearing cap 104 218 edge can be bent than the edge at closer central axis X-X ' places with lower compression stress.

When directed thrust directed thrust surfaces 143 start to bend to more convex axial profile, it is applied on bearing 208 by bearing cap 104 Compression stress can be then during bearing is extruded along longitudinal axis or the axial profile change of bearing 208.Specifically, thrustmeter is worked as Face 143 is because when recess 106 and 407 starts to bend to convex form, the inside compression stress can be closer to the center of bearing 208 Axis X-X ' is bigger.Therefore, as shown in the example in Fig. 7, directed thrust directed thrust surfaces 143 and bearing 208 can bend to more convex form.When When directed thrust directed thrust surfaces 143 start bending, the surface area of the contact surface between directed thrust directed thrust surfaces 143 and outer first surface 211 can subtract It is few.As shown in the example in figure 7, the edge close to surface 108 and 218 of directed thrust directed thrust surfaces 143 can be bent downwardly, and more Can be bent upwards close to the region of central axis X-X '.Therefore, the most top region of only directed thrust directed thrust surfaces 143 can be with contact bearing 208 outer first surface 211.Therefore, compression stress on bearing 208 is applied at the point contacted with directed thrust directed thrust surfaces 143 can be with Increase, because the region of contact can be reduced.More specifically, being applied to closer on the surface 211 at central axis X-X ' places The compression stress can increase and the compression stress closer to the edge of bearing 208 can reduce.By this way, due to edge The changes in distribution of the compression stress of the longitudinal axis of bearing 208, bearing 208 can with the identical of directed thrust directed thrust surfaces 143 Mode starts bending.

Dotted line represents the surface 243 and 213 before bearing extruding and the applying of the compression stress in Fig. 7.Such as reference picture 4 Illustrated in detail above to Fig. 6, the surface 211 and 213 of bearing 208 can be along the substantially flat peace of the longitudinal axis Face.However, during bearing extruding and after bearing extruding, due to the bending and the subsequent compression of directed thrust directed thrust surfaces 143 Along one or more in the change of the axial profile of bearing 208, bearing 208 can be deformed to slightly convex shape to the size of power Shape.Therefore, directed thrust directed thrust surfaces 143 can bend to slightly convex shape along the axial profile of directed thrust directed thrust surfaces 143.Accordingly, bearing 208 surface 211 and 213 can meet the shape of directed thrust directed thrust surfaces 143, and therefore can during bearing is extruded and/ Or convex form is changed into after bearing extruding, rather than flat shape.

Specifically, bearing 208 and directed thrust directed thrust surfaces 143 can deform so that surface 143,211 and 213 towards bent axle (for example, Bent axle 240 shown in Fig. 2A to Fig. 2 B) extend internally.Therefore, the inward displacement on surface 143,211 and 213 can be in direction Central axis X-X ' Shi Geng great, and can be maximum at central axis X-X ' places.In some instances, surface 143,211 and 213 Can bearing extrude before and after central axis X-X ' places shift about 3 μm.However, in other examples, surface 143, 211 and 213 can bearing extrude before and after central axis X-X ' be between 0.5 μm and 5.0 μm shift.Therefore, Surface 143,211 and 213 can bend during bearing is extruded, and tightening and the resulting compressive force in the bolt After applying, surface 143,211 and 213 can limit curvature 702.Curvature 702 can limit round arc, wherein the arc Length be equal to bearing cap 104 length 402 and bearing 208 length 504.The radius of the circle limited by curvature 702 can To be about 27,000.00mm.Additionally, the central angle of the arc limited by curvature 702 may be about 0.05 degree.

In another way, the angle of bend θ on surface 143,211 and 213₂May be about 0.025 degree.It is, surface 143rd, 211 and 213 can with angle of bend θ₂Equal amount bending.Angle of bend θ₂Can represent the compression stress applying it Preceding and surface 143,211 and 213 afterwards amount of bow.In another way, angle of bend θ₂Can limit curvature 702 relative to by The amount of bow of flat, plane the profile shown in the dotted line 704 in Fig. 7.

By this way, engine cylinder-body component can include cylinder block and be bolted to the bearing of the cylinder block Lid, the bearing cap includes：It is included in the first recess in first surface；It is included in the second surface relative with first surface The second recess；And the directed thrust directed thrust surfaces being connected with crankshaft bearing, wherein due to the first recess and the second recess, directed thrust directed thrust surfaces it is firm Degree can change along the axial profile of directed thrust directed thrust surfaces.The top of the first recess and the second recess can be positioned permanent away from directed thrust directed thrust surfaces Set a distance.In some instances, the constant distance may be about 5.0mm.Above-mentioned engine cylinder-body component any one Or in combination, the first recess and the second recess can extend internally from first surface and second surface respectively, so as in bearing cap Interior formation recess.In any one or combination in above-mentioned engine cylinder-body component, the recess can separate about 6.0mm's Distance.In any one or combination of above-mentioned engine cylinder-body component, the rigidity of directed thrust directed thrust surfaces can be closer to bearing The central axis of lid is bigger.In any one or combination of above-mentioned engine cylinder-body component, it is connected to when by bolt of bearing cap During cylinder block, directed thrust directed thrust surfaces can bend to more convex axial profile.In any one or group of above-mentioned engine cylinder-body component In conjunction, directed thrust directed thrust surfaces can apply compression stress on crankshaft bearing, wherein the compression stress can be in crankshaft bearing Heart axis is bigger.In another expression, crankshaft main bearing lid can include：It is included on the preceding surface of the bearing cap One recess；It is included in the second recess on the rear surface relative with the preceding surface；Semicircle thrustmeter for keeping bent axle Face, wherein the flexible of the directed thrust directed thrust surfaces can change along the axial profile of the directed thrust directed thrust surfaces；And thrust bearing, its be suitable to The trunnion connection of the directed thrust directed thrust surfaces and the bent axle.The directed thrust directed thrust surfaces of crankshaft main bearing lid can be along the directed thrust directed thrust surfaces Axial profile it is flat.In any one or combination of above-mentioned crankshaft main bearing lid, when bolt of bearing cap is connected into vapour During cylinder body, directed thrust directed thrust surfaces can increase along the convexity of the axial profile of the directed thrust directed thrust surfaces.In appointing for above-mentioned crankshaft main bearing lid What one or combination in, the compression stress being applied to by directed thrust directed thrust surfaces on the thrust bearing can be closer to the thrust bearing Central axis is bigger.In any one or combination of above-mentioned crankshaft main bearing lid, when bolt of bearing cap is connected into cylinder block When, bearing can increase along the convexity of the axial profile of the bearing.In any one or combination of above-mentioned crankshaft main bearing lid In, each in the first recess and the second recess can include curved top portion, wherein the curved top portion can meet thrustmeter The shape in face so that the curved top portion forms round arc, wherein the top can be with directed thrust directed thrust surfaces alternate constant distance. In any one or combination of above-mentioned crankshaft main bearing lid, the first recess can be from the preceding surface towards the center of bearing cap Axis extends internally, so that the depth of the recess is limited, wherein the depth of the recess is about 7.0mm.In above-mentioned bent axle master In any one or combination of bearing cap, second recess can be inside towards the central axis of bearing cap from the rear surface Extend, so that the depth of the recess is limited, wherein the depth of second recess is about 7.0mm.

In another expression, engine cylinder-body component can include cylinder block, bent axle, be bolted to the bearing of cylinder block Lid, the first recess that the bearing cap includes being extended internally from the preceding first surface of bearing cap, from relative with first surface the The second recess and directed thrust directed thrust surfaces that two surfaces extend internally, wherein the mechanical strength of the directed thrust directed thrust surfaces can be closer to thrust The central axis on surface is bigger, and crankshaft bearing, and it is positioned between the bent axle and the bearing cap, and wherein described axle The first surface for holding can be connected with directed thrust directed thrust surfaces, and the opposite second surface of wherein described bearing can be with the bent axle Trunnion is connected.In any one or combination of above-mentioned crankshaft main bearing lid, the depth of the first recess may be about bearing cap Length 1/3rd.In any one or combination of above-mentioned crankshaft main bearing lid, the depth of the second recess may be about / 3rd of the length of bearing cap.In any one or combination of above-mentioned crankshaft main bearing lid, when bolt of bearing cap connection During to cylinder block, directed thrust directed thrust surfaces can apply bigger compression at the central axis of the closer bearing on the bearing Power.

By this way, the technique effect for increasing the convexity of the axial profile of crankshaft main bearing is positioned at bent axle by including Two recesses on the opposite side of main beating cap are realized.The size of the recess, shape and position can be set in the master In bearing cap so that during bearing is extruded, wherein the bolt of main bearing cap is connected to cylinder block, by bearing cap and cylinder block The compression stress being applied on the base bearing changes along the axial profile of the bearing.Specifically, the power can be close to axle It is bigger at the central axis for holding.Therefore, the convexity of the axial profile of the base bearing can bearing extrude during realize, and The costly and time-consuming machining of the bearing and/or bent axle can be reduced.

It is noted that the example control for including herein and estimation routine can match somebody with somebody with various engines and/or Vehicular system Put and be used together.Control method disclosed herein and routine can be stored in non-transitory memory as executable instruction, And can be combined with various sensors, actuator and other engine hardwares and be carried out by the control system including controller.This Specific routine described in text can represent any amount of event-driven, interrupt the treatment plan such as driving, multitask, multithreading One or more in slightly.Therefore, shown various actions, operation and/or function can in the order shown, concurrently or Some are performed in the case of omitting.Equally, the processing sequence is not to realize the feature of example embodiment as herein described and excellent Necessary to point, but it is to provide the processing sequence and is easy to illustrate and describes.In described action, operation and/or function one Individual or multiple can be repeatedly carried out according to the specific policy for using.Additionally, described action, operation and/or function can be with In representing graphically the non-transitory memory of the computer-readable recording medium in engine control system to be incorporated into Code, during action described in it is by performing and including the system that various engine hardware components are combined with electronic controller Instruction is completed.

It will be appreciated that configuration disclosed herein and routine are inherently exemplary, and these specific embodiments Should not consider in a limiting sense, because many modifications are all possible.For example, technology above can apply to V-6, I-4, I-6, V-12, opposed 4 cylinder and other engine types.The theme of the disclosure includes the various systems and configuration and is disclosed herein Other features, all novel and non-obvious combination of function and/or attribute and sub-portfolio.

Appended claims are particularly pointed out and are considered as novel and non-obvious some combinations and sub-portfolio.These rights It is required that may refer to " one " element or " first " element or their equivalent, both it is neither requiring nor excluding two or more This class component.Other combinations of disclosed feature, function, element and/or attribute and sub-portfolio can be by present claims Modification or propose that new claim is protected by by the application or related application.No matter such claim is in scope On, narrower, equal thereto or difference more wider than the original claim, be also regarded as being included in the theme of the disclosure.

Claims

1. a kind of engine cylinder-body component, the component includes：

Cylinder block；

Crankshaft bearing；With

The bearing cap of the cylinder block is bolted to, the bearing cap includes：

It is included in the first recess in first surface；

It is included in the second recess in the second surface relative with the first surface；With

Directed thrust directed thrust surfaces, when the bolt of bearing cap is connected into the cylinder block due to first recess and the second recess, Its vertically profile curves to more convex curvature.

2. engine cylinder-body component according to claim 1, wherein the top of first recess and the second recess with away from The constant distance positioning of the directed thrust directed thrust surfaces, and wherein described constant distance is about 5.0mm.

3. engine cylinder-body component according to claim 1, wherein first recess and the second recess cause described pushing away The rigidity on power surface changes along the axial profile, so as to cause institute when the bolt of bearing cap is connected into the cylinder block State directed thrust directed thrust surfaces and bend to the more convex curvature.

4. engine cylinder-body component according to claim 3, wherein the rigidity of the directed thrust directed thrust surfaces is closer to institute State at the central axis of bearing cap more greatly and smaller close to the edge of the bearing cap.

5. engine cylinder-body component according to claim 1, wherein first recess and the second recess are respectively from described First surface and second surface extend internally, so as to form recess in the bearing cap, wherein the recess is with about 6.0mm's Distance separation.

6. engine cylinder-body component according to claim 1, wherein when the bolt of bearing cap is connected into the cylinder First compression stress of about 20kN is applied to the cylinder block and the bearing cap, and wherein described directed thrust directed thrust surfaces to be more than during body The compression stress bending of the second compression stress, second compression stress is less than first compression stress.

7. engine cylinder-body component according to claim 6, also including for fastening the bearing cap to the cylinder block Two or more Main bearing bolts, wherein the Main bearing bolt extends through the bearing cap and extends to the cylinder In body, and wherein described first compression stress is applied by tightening Main bearing bolt to position is tightened completely.

8. engine cylinder-body component according to claim 1, wherein when the bolt of bearing cap is connected into the cylinder The directed thrust directed thrust surfaces apply compression stress, and wherein described compression stress closer to the Crankshaft on the crankshaft bearing during body The central axis for holding is bigger.

9. a kind of crankshaft main bearing lid, the crankshaft main bearing lid includes：

It is included in the first recess on the preceding surface of the bearing cap；

It is included in the second recess on the rear surface relative with the preceding surface；

Semicircle directed thrust directed thrust surfaces for keeping bent axle, wherein the flexible axial direction wheel along the directed thrust directed thrust surfaces of the directed thrust directed thrust surfaces Exterior feature changes；With

Thrust bearing, it is suitable to be connected with the trunnion of the directed thrust directed thrust surfaces and the bent axle.

10. crankshaft main bearing lid according to claim 9, wherein the directed thrust directed thrust surfaces are by bolt of bearing cap connection The axial profile to directed thrust directed thrust surfaces described in the forward position of cylinder block is flat, and is wherein connected when by the bolt of bearing cap When being connected to cylinder block, due to the directed thrust directed thrust surfaces structural stability the directed thrust directed thrust surfaces edge ratio in the thrustmeter Smaller at the central axis in face, the directed thrust directed thrust surfaces bend to convex curvature, the Stability Analysis of Structures of reduction along the axial profile Property is caused by first recess and the second recess.

11. crankshaft main bearing lids according to claim 10, wherein the convex curvature is limited by about 0.025 degree of angle of bend It is fixed.

12. crankshaft main bearing lids according to claim 9, wherein being applied on the thrust bearing by the directed thrust directed thrust surfaces Compression stress it is bigger closer to the central axis of the thrust bearing.

13. crankshaft main bearing lids according to claim 9, wherein when the bolt of bearing cap is connected into cylinder block, The bearing increases to final curvature along the convexity of the axial profile of the bearing, and the final curvature is curved by about 0.025 degree Bent angle limits.

14. crankshaft main bearing lids according to claim 9, wherein when the bolt of bearing cap is connected into cylinder block, The directed thrust directed thrust surfaces apply compression stress on the bearing, and bearing applying normal force is in the directed thrust directed thrust surfaces, institute State normal force approximately equivalent in size with the compression stress and opposite on direction.

15. crankshaft main bearing lids according to claim 9, wherein first recess is from the preceding surface towards the axle The central axis for holding lid extends internally, and the depth of the recess is limited, wherein the depth of the recess is about 8mm.

16. crankshaft main bearing lids according to claim 9, wherein second recess is from the rear surface towards the axle The central axis for holding lid extends internally, and the depth of the recess is limited, wherein the depth of second recess is about 8mm.

A kind of 17. engine cylinder-body components, the component includes：

Cylinder block；

Bent axle；

The bearing cap of the cylinder block is bolted to, the bearing cap includes：

From the first recess that the preceding first surface of the bearing cap extends internally；

From the second recess that the second surface relative with the first surface extends internally；With

Directed thrust directed thrust surfaces, wherein the mechanical strength of the directed thrust directed thrust surfaces is bigger closer to the central axis of the directed thrust directed thrust surfaces；With

Crankshaft bearing, it is positioned between the bent axle and the bearing cap, and the first surface of wherein described bearing is connected The directed thrust directed thrust surfaces, and the opposite second surface of wherein described bearing connects the trunnion of the bent axle.

18. engine cylinder-body components according to claim 17, wherein the depth of first recess is approximately the bearing / 3rd of the length of lid.

19. engine cylinder-body components according to claim 17, wherein the depth of second recess is about the bearing / 3rd of the length of lid.

20. engine cylinder-body components according to claim 17, wherein when the bolt of bearing cap is connected to the cylinder During body, the directed thrust directed thrust surfaces apply bigger compression stress on the bearing at the central axis of the closer bearing.